- 您现在的位置：买卖IC网 > PDF目录380086 > CS62180 (Cirrus Logic, Inc.) Ultraframer DS3/E3/DS2/E2/DS1/E1/DS0 PDF资料下载
参数资料
| 型号： | CS62180 |
| 厂商： | Cirrus Logic, Inc. |
| 元件分类： | 通信及网络 |
| 英文描述： | Ultraframer DS3/E3/DS2/E2/DS1/E1/DS0 |
| 中文描述： | Ultraframer DS3/E3/DS2/E2/DS1/E1/DS0 |
| 文件页数： | 32/50页 |
| 文件大小： | 411K |
| 代理商： | CS62180 |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页当前第32页第33页第34页第35页第36页第37页第38页第39页第40页第41页第42页第43页第44页第45页第46页第47页第48页第49页第50页
Violation received will cause BVCS (RSR.7) to
be set to a "1". The BVCR can be preset, to a
value greater than 0, to lower the threshold at
which it saturates and signals an alarm in RSR.7.
Bipolar Violations in valid B8ZS codes are never
counted by the CS62180B
. Note also that the
Bipolar Violation monitoring circuit is disabled
entirely when using NRZ input at
RPOS/RNEG (selected by tying RPOS/RNEG
together).
Individual Bipolar Violations are also reported in
real time on RBV (pin 37). RBV will go high
simultaneously with the output of the accused bit
at RSER. It will only be held for that bit period,
falling at the next bit, unless another violation is
detected.
Interrupts
When operating in host mode, an interrupt pin,
INT (pin 14), is provided to signal the host proc-
essor of alarm conditions. INT is an open drain
output, and should be tied to the positive supply
through a resistor. The INT pin can be pro-
grammed to respond whenever any bit of the
Receive Status Register (RSR) goes high by set-
ting the corresponding bit of the Receive
Interrupt Mask Register (RIMR). Each bit of the
RIMR is ’AND’ed with the corresponding bit of
the RSR to determine the interrupt. Clearing any
bit in the RIMR will disable the interrupt for that
alarm condition. When an interrupt has been sig-
naled, the CS62180B must be
serviced by the
host processor to clear the alarm,
as described below.
Figure 25 shows an overview
of the RIMR.
Alarm Servicing
The CS62180B must be serviced
by the host processor to clear the interrupt.
Clearing the appropriate bit (or bits, if more than
1 alarm condition exists) in the Receive Interrupt
Mask Register (RIMR) will clear any interrupt
unconditionally. The interrupt for that alarm will
remain disabled until the bit in the RIMR is set
again.
Depending on the type of alarm condition, an in-
terrupt may also be cleared without changing the
RIMR. If the alarm is in response to a counter
saturation (see
Bipolar Violation Count Satura-
tion
and
Error Count Saturation
, above), then
the counter must be reset to a value other than
all "1’s" to clear the alarm. If the interrupt is in
response to a real time event, then it may be
cleared by a
direct
read (a burst read will have
no effect) of the RSR. Note that reading the RSR
will only clear the interrupt if the alarm condi-
tion no longer persists. For real time events of
long duration, clearing the appropriate bits in the
RIMR is the only way to clear the interrupt.
7
(MSB)
BVCS
6
5
4
3
2
1
0
(LSB)
ECS
RYEL
Disables interrupts for the corresponding bit of the RSR.
Enables an interrupt whenever the corresponding bit of the RSR goes high.
RCL
FERR
B8ZSD
RBL
RLOS
0
1
Figure 25. Receive Interrupt Mask Register (RIMR)
7
(MSB)
BVD7
6
5
4
3
2
1
0
(LSB)
BVD6
Counts individual Bipolar Violations. Sets RSR.7 high when overfolws past 255 (11111111).
Presetable to any starting value to limit the number of Bipolar Violations needed to overflow.
BVD5
BVD4
BVD3
BVD2
BVD1
BVD0
Figure 24. Bipolar Violation Count Register (BVCR)
CS62180B
32
DS225PP
2
相关PDF资料 |
PDF描述 |
|---|---|
| CS62180B | Ultraframer DS3/E3/DS2/E2/DS1/E1/DS0 |
| CS62180B-IL | Ultraframer DS3/E3/DS2/E2/DS1/E1/DS0 |
| CS62LS4008GC | Low Power CMOS SRAM 512K X 8 Bits |
| CS62LS4008GI | Low Power CMOS SRAM 512K X 8 Bits |
| CS62LS4008HC | Low Power CMOS SRAM 512K X 8 Bits |
相关代理商/技术参数 |
参数描述 |
|---|---|
| CS62180A | 制造商:未知厂家 制造商全称:未知厂家 功能描述:T1 Framer |
| CS62180A-IL | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Framer/Formatter |
| CS62180A-IP | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Framer/Formatter |
| CS62180B | 制造商:CIRRUS 制造商全称:Cirrus Logic 功能描述:T1 FRAMER |
| CS62180B-IL | 制造商:Rochester Electronics LLC 功能描述: 制造商:Cirrus Logic 功能描述: |
发布紧急采购，3分钟左右您将得到回复。